linux.git/Documentation/accounting, branch v4.9

tools: move accounting tool from Documentation

2016-09-23T19:07:15+00:00

Move accounting tool to tools and remove it from Documentation
Makefile. Update location information for this tool. Create a
new Makefile to build accounting. It can be built from top level
directory or from accounting directory:

Run make -C tools/accounting or cd tools/accounting; make

Acked-by: Jonathan Corbet 
Signed-off-by: Shuah Khan

taskstats: fix nl parsing in accounting/getdelays.c

2016-04-27T16:50:14+00:00

The type TASKSTATS_TYPE_NULL should always be ignored.

When jumping to the next attribute, only the length of the current
attribute should be added, not the length of all nested attributes.
This last bug was not visible before commit 80df554275c2, because the
kernel didn't put more than two nested attributes.

Fixes: a3baf649ca9c ("[PATCH] per-task-delay-accounting: documentation")
Fixes: 80df554275c2 ("taskstats: use the libnl API to align nlattr on 64-bit")
Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

Documentation-getdelays: Apply a recommendation from "checkpatch.pl" in main()

2015-12-24T14:22:32+00:00

The script "checkpatch.pl" pointed out that assignments should usually
not be performed within condition checks.
Thus move the assignment for the variable "nl_sd" to a separate statement.

Signed-off-by: Markus Elfring 
Signed-off-by: Jonathan Corbet

Documentation: use subdir-y to avoid unnecessary built-in.o files

2014-09-26T09:02:55+00:00

Change the Documentation makefiles from obj-m to subdir-y
to avoid generating unnecessary built-in.o files since nothing
in Documentation/ is ever linked in to vmlinux.

Signed-off-by: Peter Foley 
Acked-by: Sam Ravnborg 
Signed-off-by: Randy Dunlap 
Signed-off-by: Jiri Kosina

Documentation/accounting/getdelays.c: add missing null-terminate after strncpy call

2014-06-23T23:47:44+00:00

Added a guaranteed null-terminate after call to strncpy.

This was partly found using a static code analysis program called
cppcheck.

Signed-off-by: Rickard Strandqvist 
Acked-by: Kees Cook 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Documentation/accounting/getdelays.c: avoid strncpy in accounting tool

2013-07-03T23:08:06+00:00

Avoid strncpy anti-pattern.

[akpm@linux-foundation.org: remove the str[cpy|dup] altogether]
Signed-off-by: Kees Cook 
Cc: Andreas Schwab 
Cc: Rob Landley 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c

2012-11-26T13:22:21+00:00

stime and utime are declared __u64 but are never used.  On a glibc system
this is harmless lint, but on a uClibc system, because of the difference
in they way header files stack, including stdio.h brings in time.h and
this causes a name collision with stime.  Since these are useless anyhow,
we remove them.

Signed-off-by: Anthony G. Basile 
Signed-off-by: Jiri Kosina

doc: getdelays.c: remember to close() socket on error in create_nl_socket()

2012-09-01T16:58:59+00:00

If the call to setsockopt() fails in
Documentation/accounting/getdelays.c::create_nl_socket() we return -1
without closing the socket, thus leaking it when the 'fd' variable
goes out of scope.

Easily fixed by just jumping to the 'error' label instead of returning
since we do the proper cleanup there.

While I was there I noticed that the error message that is printet if
setsockopt() fails was broken over two lines - put that on a single
line so it is easier to grep for.

Signed-off-by: Jesper Juhl 
Signed-off-by: Jiri Kosina

Documentation: update cgroupfs mount point

2011-06-16T04:52:50+00:00

According to commit 676db4af0430 ("cgroupfs: create /sys/fs/cgroup to
mount cgroupfs on") the canonical mountpoint for the cgroup filesystem
is /sys/fs/cgroup.  Hence, this should be used in the documentation.

Signed-off-by: Jörg Sommer 
Acked-by: Paul Menage 
Signed-off-by: Randy Dunlap 
Signed-off-by: Linus Torvalds

getdelays: show average CPU/IO/SWAP/RECLAIM delays

2011-05-27T00:12:34+00:00

I find it very handy to show the average delays in milliseconds.

Example output (on 100 concurrent dd reading sparse files):

  CPU             count     real total  virtual total    delay total  delay average
                    986     3223509952     3207643301    38863410579         39.415ms
  IO              count    delay total  delay average
                      0              0              0ms
  SWAP            count    delay total  delay average
                      0              0              0ms
  RECLAIM         count    delay total  delay average
                   1059     5131834899              4ms
  dd: read=0, write=0, cancelled_write=0

Signed-off-by: Wu Fengguang 
Cc: Mel Gorman 
Cc: Balbir Singh 
Reviewed-by: Satoru Moriya 
Reviewed-by: KOSAKI Motohiro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds